Maestro n° 099 : Page 54 - Gr 51
L2C2 =9= L2C6 -9- L3C4 =9= L6C4 -9-1- L6C4 =1= L6C6 -1-2- L6C6 =2= L6C5 -2- L8C5 =2= L8C8 -2-1- L8C8 =1= L8C2 donc L2C2 ≠ 1 et L8C2 ≠ 9